The three-day conference features sessions on its Android operating system for mobile phones, its Google+ social network, Google cloud platforms, Google Maps, YouTube and Google Wallet, among others. Thursday’s sessions include a number of discussions about Google Glass, the company’s yet-to-be released wearable computer, including a session called “Voiding Your Warranty: Hacking Glass.” Some of the sessions will be viewable via video feeds.

As to the conference name itself, the term I/O is simply geek speak for input/output, the process by which information systems, such as computers, receive information from and transmit it to the real world.

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